No, they do not quite have the same meaning.
"You are getting close to..." implies that the person is moving. For example, they are searching for the sign, but they are not "getting close to any".
"You are close to..." implies that the person is still. They may have been searching for it, but they are not currently "close to" any signs.
Also, your sentences don't make very much sense. Here's what they should be replaced with:
"No sign you are getting close to it."
Replacement: "There is no sign you are getting close to" (it was removed from the end of the sentence, and there is was added to the beginning)
Better Replacement: "You are not getting close to the sign"
"No sign you are close to it."
Replacement: "There is no sign you are close to" (it was removed from the end of the sentence, and there is was added to the beginning)
Better Replacement: "You are not close to the sign"
For example, If my friend was searching for a sign that I placed, and was walking around and could not find it, they might ask me for a hint. So, I would say "You are not getting close to the sign". (My friend is moving, and is either getting closer or farther from the sign as he moves)
For the second sentence, if my friend was about do do a flip, and wanted to make sure that the sign was not in their way, they could ask if they were close to it, to which I would respond "You are not close to the sign". (My friend just wants to know his surroundings, he's not currently trying to get closer or farther away from the sign).
"getting closer to" should only be used if the subject is moving and wanted to know where the object was in relation to them. "close to" should be used if the subject is not moving, and doesn't really care about exactly where the object is
This is a funny question to an Australian. Yous is commonly heard in Australia among people who are popularly referred to as bogans, but is also heard in the more regional parts of the country. A bogan is someone who is a little rough around the edges, probably poorly educated or sometimes just pretending to be (A 'bogan' who went to a private school since kindergarten is a particularly interesting phenomenon). As mentioned before though, it's not exclusive to bogans.
Anyway, it is generally seen as not proper English when used here which is funny because I hate saying 'you guys' or 'you all' and would like to be able to say "ya'll" or "youse". Sometimes I say, 'What are youse guys doing tonight?' to my friends for a laugh but as I said its usage is not widespread.
It's also spelt 'Youse' in Australia. See definition number 2: http://www.urbandictionary.com/define.php?term=Youse
Best Answer
In general, we use "helps" with third person singular, "help" with all other forms.
I help. You help. He/she/it helps.
We help. You help. They help.
If you are not using a pronoun but some other noun, then you use the third person forms, "helps" for singular and "help" for plural.
So in your example, "callbacks"is a common noun, the plural of "callback". Thus the correct usage is, "Callbacks help ..."